package com.jiyi.widget;


import android.content.Context;
import android.graphics.drawable.Drawable;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnFocusChangeListener;

import com.jiyi.inteface.ClearEditTextInterface;
import com.swift.maintenance.R;

public class ClearEditText extends android.support.v7.widget.AppCompatEditText implements  OnFocusChangeListener{
	/**
	 * 删除按钮的引用
	 */
	private Drawable mClearDrawable; 
	/**
	 * 搜索按钮的引用
	 */
	private Drawable mSearchDrawable; 
	/**
	 * 控件是否有焦点
	 */
	private boolean hasFoucs;
	/**
	 * 是否开启6222 2316 1256和138 8888 8888
	 * 银行卡号和电话号码显示方式
	 * 默认显示银行卡号显示方式
	 */
	public boolean showType;
	/**
	 * 开启电话号码显示方式
	 */
	public boolean showMobileType;

	//是否输入
	private boolean isRun = false;
	//输入的内容
	private String inputStr = "";
	
	//之前的内容
	private String preInputStr = "";
	
	ClearEditTextInterface clearEditTextInterface;
	
	public void setClearEditTextInterface(
			ClearEditTextInterface clearEditTextInterface) {
		this.clearEditTextInterface = clearEditTextInterface;
	}

	public ClearEditText(Context context) { 
		this(context, null); 
	} 

	public ClearEditText(Context context, AttributeSet attrs) { 
		//这里构造方法也很重要，不加这个很多属性不能再XML里面定义
		this(context, attrs, android.R.attr.editTextStyle); 
	} 

	public ClearEditText(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		init();
	}


	private void init() { 
		//获取EditText的DrawableRight,假如没有设置我们就使用默认的图片
		mClearDrawable = getCompoundDrawables()[2]; 
		if (mClearDrawable == null) { 
			mClearDrawable = getResources().getDrawable(R.mipmap.icon_close);
		} 
		mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(), mClearDrawable.getIntrinsicHeight()); 
		mSearchDrawable = getResources().getDrawable(R.mipmap.icon_search_on);
		mSearchDrawable.setBounds(0, 0, mSearchDrawable.getIntrinsicWidth(), mSearchDrawable.getIntrinsicHeight()); 
//		//默认设置隐藏图标
//		setClearIconVisible(false); 
		
		switchIcon(true);
		
		//设置焦点改变的监听
		setOnFocusChangeListener(this); 
		//设置输入框里面内容发生改变的监听
		addTextChangedListener(new TextWatcher() {
			/**
			 * 当输入框里面内容发生变化的时候回调的方法
			 */
			@Override 
			public void onTextChanged(CharSequence s, int start, int count, 
					int after) { 
				if(hasFoucs){
//					setClearIconVisible(s.length() > 0);
					switchIcon(s.length() <= 0);
				}
				
//				show(s,start);
			} 
			@Override 
			public void beforeTextChanged(CharSequence s, int start, int count, 
					int after) { 
				//判断是否是删除按键，校准光标
//				preInputStr = s.toString();
			} 
			@Override 
			public void afterTextChanged(Editable s) { 
				switchIcon(s.length() <= 0);
				
				if (TextUtils.isEmpty(s.toString())) {
					if (clearEditTextInterface != null) {
						clearEditTextInterface.onClear();
					}
				}
			}
		}); 
	} 


	/**
	 * 因为我们不能直接给EditText设置点击事件，所以我们用记住我们按下的位置来模拟点击事件
	 * 当我们按下的位置 在  EditText的宽度 - 图标到控件右边的间距 - 图标的宽度  和
	 * EditText的宽度 - 图标到控件右边的间距之间我们就算点击了图标，竖直方向就没有考虑
	 */
	@Override 
	public boolean onTouchEvent(MotionEvent event) {
		if (event.getAction() == MotionEvent.ACTION_UP) {
			if (getCompoundDrawables()[2] != null) {
				boolean touchable = event.getX() > (getWidth() - getTotalPaddingRight())
						&& (event.getX() < ((getWidth() - getPaddingRight())));
				if (touchable) {
					this.setText("");
					if (clearEditTextInterface != null) {
						clearEditTextInterface.onClear();
					}
				}
			}
		}
		return super.onTouchEvent(event);
	}

	/**
	 * 当ClearEditText焦点发生变化的时候，判断里面字符串长度设置清除图标的显示与隐藏
	 */
	@Override 
	public void onFocusChange(View v, boolean hasFocus) { 
		this.hasFoucs = hasFocus;
		if (hasFocus) { 
//			setClearIconVisible(getText().length() > 0); 
			switchIcon(getText().length() <=0);
		} else { 
//			setClearIconVisible(false); 
			switchIcon(true);
		} 
	} 


	/**
	 * 设置清除图标的显示与隐藏，调用setCompoundDrawables为EditText绘制上去
	 * @param visible
	 */
	protected void setClearIconVisible(boolean visible) { 
		Drawable right = visible ? mClearDrawable : null; 
		setCompoundDrawables(getCompoundDrawables()[0], 
				getCompoundDrawables()[1], right, getCompoundDrawables()[3]); 
	} 
	
	protected void switchIcon(boolean isEmpty) {
		Drawable icon = isEmpty ? mSearchDrawable : mClearDrawable; 
		setCompoundDrawables(getCompoundDrawables()[0], 
				getCompoundDrawables()[1], icon, getCompoundDrawables()[3]); 
	}
	
	/**
	 * 开启银行卡号和电话号码显示方式
	 */
	private void show(CharSequence s,int start){
		if(showType){//开启了银行卡号、电话号码显示方式
			if(isRun){
				isRun = false;
				return;
			}
			isRun = true;
			inputStr = "";
			String newStr = s.toString();
			newStr = newStr.replace(" ", "");
			int index = 0;
			if(showMobileType){//电话号码显示方式
				if((index + 3)< newStr.length()){
					inputStr += (newStr.substring(index, index + 3)+ " ");
					index += 3;
				}
			}
			while((index + 4)< newStr.length()){
				inputStr += (newStr.substring(index, index + 4)+ " ");
				index += 4;
			}
			inputStr += (newStr.substring(index, newStr.length()));
			int pre = (inputStr.toString().length()>preInputStr.length() ? (inputStr.toString().length() - preInputStr.length()) : 0);
			this.setText(inputStr);
			
			this.setSelection((start+pre) > inputStr.length() ? inputStr.length() : (start+pre));
//			this.setSelection(inputStr.length());
			
		}
	}
	
	
}

